var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var logger4js = require("./logger");
var dbHelper = require("./db/db.js");
var session = require('express-session');
var ejs = require('ejs');


var routes = require('./routes/index');
var users = require('./routes/users');
var htmlRoutes = require('./routes/htmls');

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'dist/html'));
app.set('view engine', 'ejs');


dbHelper.init();

// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
//app.use(logger4js);
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static('./dist/js'));

// 允许跨域访问
app.all('*', function(req, res, next) {
    res.header("Access-Control-Allow-Origin", "*");
    res.header("Access-Control-Allow-Credentials", "true");
    res.header("Access-Control-Allow-Headers", "X-Requested-With");
    res.header("Access-Control-Allow-Methods","PUT,POST,GET,DELETE,OPTIONS");
    res.header("X-Powered-By",' 3.2.1');
    next();
});

app.use(session({
    secret: '123', // 建议使用 128 个字符的随机字符串
    cookie: { maxAge: 60 * 1000 },
    resave: false,
    saveUninitialized: true
}));
app.use('/', routes);
app.use('/users', users);
app.use('/html', htmlRoutes);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
    var err = new Error('Not Found');
    err.status = 404;
    next(err);
});

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
    app.use(function(err, req, res, next) {
        res.status(err.status || 500);
        res.render('error', {
            message: err.message,
            error: err
        });
    });
}

// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
    res.status(err.status || 500);
    res.render('error', {
        message: err.message,
        error: {}
    });
});


module.exports = app;
